Environment-friendly foam concrete anti-cracking component based on bamboo wood

Abstract

The utility model discloses an environment-friendly foam concrete anti-cracking member based on bamboo wood, which belongs to the technical field of building structural members and comprises a bamboo fiber foam concrete inner core, variable-diameter perforated bamboo tubes are arranged in the bamboo fiber foam concrete inner core at intervals, #-shaped pore passages are formed in the outer surface of the bamboo fiber foam concrete inner core, and the diameter of the #-shaped pore passages is larger than that of the bamboo fiber foam concrete inner core. A bamboo cane weaving connecting layer is arranged on the #-shaped hole channel, the #-shaped hole channel is matched with the bamboo cane weaving connecting layer, and the outer surface of the bamboo fiber foam concrete inner core and the outer surface of the bamboo cane weaving connecting layer are both coated with high-toughness cement-based spraying layers in a spraying mode. The environment-friendly foam concrete anti-cracking component based on the bamboo wood has the advantages of being environmentally friendly, light, high in anti-cracking capacity and good in durability, and is easy to popularize and apply.

Description

TECHNICAL FIELD

[0001] The utility model relates to building structural member technical field especially is related to a kind of environment-friendly foam concrete anti-cracking component based on bamboo material. BACKGROUND

[0002] The construction industry is a major area of global energy consumption and carbon emissions, and urbanization has accelerated this trend. Lack of industry chain collaboration, technology innovation and green building material promotion hinders the low-carbon transformation of the construction industry. Although bamboo has environmental advantages, processing technology lags behind, and large-scale application is limited. Therefore, new environmentally friendly bamboo technology needs to be developed to reduce energy consumption and carbon emissions and promote the development of bamboo processing technology to achieve sustainable development of the construction industry. SUMMARY

[0003] The utility model aims to provide a kind of environment-friendly foam concrete anti-cracking component based on bamboo material, bamboo fiber, bamboo tube, bamboo strip are all renewable materials, bamboo fiber foam concrete inner core is lighter, with the insertion of variable diameter bamboo tube, the weight of the anti-cracking component can be further reduced, the bamboo strip weaving connection layer can effectively improve the adhesion of the bamboo fiber foam concrete inner core and the high toughness cement-based spraying layer, the high toughness cement-based spraying layer can effectively improve the anti-cracking ability and durability of the anti-cracking component, so that the anti-cracking component has the advantages of environmental protection, light weight, strong anti-cracking ability and good durability, easy to promote and apply.

[0004] To achieve the above purpose, the utility model provides an environment-friendly foam concrete anti-cracking component based on bamboo material, which comprises a bamboo fiber foam concrete inner core, a variable diameter open bamboo tube is arranged inside the bamboo fiber foam concrete inner core, a well-shaped hole is formed on the outer surface of the bamboo fiber foam concrete inner core, a bamboo strip weaving connection layer is arranged on the well-shaped hole, the well-shaped hole is matched with the bamboo strip weaving connection layer, and a high toughness cement-based spraying layer is sprayed on the outer surface of the bamboo fiber foam concrete inner core and the outer surface of the bamboo strip weaving connection layer.

[0005] Preferably, the volume fraction of bamboo fiber in the bamboo fiber foam concrete inner core is 1.5-4.5%, the length of the bamboo fiber is 15-20mm, the diameter is 160-200μm, and the strength is 500-800MPa.

[0006] Preferably, the porosity of the foam concrete in the bamboo fiber foam concrete inner core is 40-60%, the splitting tensile strength is not less than 2MPa, and the compressive strength is not less than 15MPa.

[0007] Preferably, the variable-diameter open-hole bamboo cylinder is arranged in two rows, the horizontal distance between the centers of the variable-diameter open-hole bamboo cylinders is 140-160 mm, the vertical distance between the variable-diameter open-hole bamboo cylinders is 160-180 mm, and the distance between the center of the variable-diameter open-hole bamboo cylinder and the side wall of the lengthwise bamboo fiber foam concrete inner core close to the center of the variable-diameter open-hole bamboo cylinder is 180-200 mm.

[0008] Preferably, the variable-diameter open-hole bamboo cylinder is provided with a bamboo cylinder opening at each end and a bamboo cylinder through hole in the middle, the distance between the bamboo cylinder through holes is 150 mm, and the diameter of the bamboo cylinder through hole is 30-40 mm.

[0009] Preferably, the inner diameter of the variable-diameter open-hole bamboo cylinder at the bamboo cylinder opening is 76-80 mm, and the wall thickness is 6-8 mm, and the inner diameter of the variable-diameter open-hole bamboo cylinder at the bamboo cylinder through hole is 72-76 mm, and the wall thickness is 8-10 mm.

[0010] Preferably, the cross-shaped hole is a reserved three-dimensional through hole, and the edges of the cross-shaped hole are provided with round corners, the width of the cross-shaped hole is 25-30 mm, and the thickness of the cross-shaped hole is 5-7 mm.

[0011] Preferably, the bamboo strip woven connection layer comprises transverse bamboo strips and longitudinal bamboo strips that are cross-woven, the woven gap of the transverse bamboo strips and the longitudinal bamboo strips is a square with a side length of 6-8 mm, the width of the transverse bamboo strips and the longitudinal bamboo strips is 8-12 mm, the thickness of the transverse bamboo strips and the longitudinal bamboo strips is 1-2 mm, the strength of the transverse bamboo strips and the longitudinal bamboo strips is 180-200 MPa, and the water content of the transverse bamboo strips and the longitudinal bamboo strips is 8-12%.

[0012] Preferably, the thickness of the high-toughness cement-based sprayed layer is 8-16 mm.

[0013] Therefore, the environment-friendly foam concrete anti-cracking component based on bamboo has the following beneficial effects:

[0014] (1) High strength and high anti-cracking performance: through reasonable proportioning of bamboo fibers and closed-cell foam concrete, the balance between high strength and lightweight of the bamboo fiber foam concrete inner core is achieved; the high-toughness cement-based sprayed layer has significant strain hardening characteristics and multiple cracking phenomena, which can effectively inhibit the expansion of cracks, and has good self-repairing property and energy absorption capacity.

[0015] (2) Excellent environmental performance: bamboo is a renewable resource with the characteristics of fast growth and strong carbon absorption capacity, the environment-friendly foam concrete anti-cracking component based on bamboo fully utilizes bamboo fibers and bamboo cylinders and other bamboo materials to replace part of traditional building materials, significantly reduces the dependence on non-renewable resources, and reduces carbon emissions in the construction industry.

[0016] (3) Good durability: the high-toughness cement-based sprayed material has good frost resistance and carbonation resistance, and can effectively resist the erosion of the structure by harsh environments.

[0017] (4) Construction convenience and wide applicability: the design of the bamboo strip woven connecting layer not only enhances the overall stability of the component, but also simplifies the construction process; the anti-cracking component is produced in a factory prefabrication manner, which can ensure the consistency and stability of product quality, and the prefabricated component can be customized according to actual engineering requirements to meet the requirements of different building structures.

[0018] (5) Significant economic benefits: bamboo resources are abundant and low in cost, compared with traditional building materials such as steel and high-performance concrete, the anti-cracking component of the utility model has obvious advantages in raw material cost; the production mode of factory prefabrication can effectively improve the production efficiency, reduce the labor cost and time cost of on-site construction, thereby further improving the economic benefits.

[0019] The technical scheme of the utility model will be described in further detail below with the aid of drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structure perspective view of an environment-friendly foam concrete anti-cracking component based on bamboo material embodiment 1 of the utility model;

[0021] Figure 2 is a structure schematic view of a bamboo fiber foam concrete inner core of an environment-friendly foam concrete anti-cracking component based on bamboo material embodiment 1 of the utility model;

[0022] Figure 3 is a structure schematic view of a bamboo strip woven connecting layer of an environment-friendly foam concrete anti-cracking component based on bamboo material comparative example 1 of the utility model;

[0023] Figure 4 is a woven structure schematic view of a bamboo strip woven connecting layer of an environment-friendly foam concrete anti-cracking component based on bamboo material embodiment 1 of the utility model;

[0024] Figure 5 is an enlarged view of structure A of an environment-friendly foam concrete anti-cracking component based on bamboo material embodiment 1 of the utility model;

[0025] Figure 6 is a structure schematic view of a variable-diameter perforated bamboo tube of an environment-friendly foam concrete anti-cracking component based on bamboo material embodiment 1 of the utility model.

[0026] REFERENCE NUMERALS

[0027] 1, high-ductility cement-based sprayed layer; 2, bamboo fiber foam concrete inner core; 3, variable-diameter perforated bamboo tube; 31, bamboo tube through hole; 32, bamboo tube opening; 4, bamboo strip woven connecting layer; 41, horizontal bamboo strip; 42, vertical bamboo strip; 43, woven gap; 5, cross-shaped hole; 51, round corner. DETAILED DESCRIPTION

[0028] The technical scheme of the utility model is further explained below by means of the drawings and examples.

[0029] Unless otherwise defined, technical terms or scientific terms used in the utility model should be understood as the common meaning understood by a person with ordinary skills in the field to which the utility model belongs. In the utility model, the words "first", "second" and similar words do not represent any order, quantity or importance, but are only used to distinguish different components. The words "include" or "contain" and similar words mean that the components or objects before the words cover the components or objects listed after the words and their equivalents, and do not exclude other components or objects. The words "connect" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. The words "up", "down", "left", "right" and the like are only used to represent relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] The bamboo fiber is from the bamboo fiber of Hongzhu New Material (Ganzhou) Co., Ltd., the transverse bamboo strip, the longitudinal bamboo strip and the bamboo cylinder are all processed products of Mao bamboo of Nanchang Tacheng Wuhushan Ecological Park Industry Co., Ltd., and the high-toughness cement-based spraying layer is from Ningbo Chenqi Building Material Co., Ltd.

[0031] Example 1

[0032] The utility model discloses an environmental protection type foam concrete anti-cracking component based on bamboo material, which comprises a bamboo fiber foam concrete inner core 2, a variable-diameter open bamboo cylinder 3 is arranged in the bamboo fiber foam concrete inner core 2, a cross-shaped hole 5 is formed on the outer surface of the bamboo fiber foam concrete inner core 2, a bamboo strip weaving connecting layer 4 is arranged on the cross-shaped hole 5, the cross-shaped hole 5 is matched with the bamboo strip weaving connecting layer 4, and a high-toughness cement-based spraying layer 1 is sprayed on the outer surfaces of the bamboo fiber foam concrete inner core 2 and the bamboo strip weaving connecting layer 4. The variable-diameter open bamboo cylinder 3 provides support for the bamboo fiber foam concrete inner core 2, the bamboo fiber foam concrete inner core 2 realizes the balance between high strength and light weight through reasonable proportioning of bamboo fiber and closed-cell foam, the bamboo strip weaving connecting layer 4 is attached to the cross-shaped hole 5, the overall stability of the anti-cracking component is enhanced, good flexibility and anti-cracking performance are provided, the high-toughness cement-based spraying layer 1 can further enhance the overall strength of the component, and has good durability and protection performance.

[0033] The double-row uniform arrangement of the variable-diameter open-hole bamboo tube 3 has a horizontal spacing of 150 mm at the center of the variable-diameter open-hole bamboo tube 3, a vertical spacing of 170 mm, and a spacing of 200 mm between the center of the variable-diameter open-hole bamboo tube 3 and the side wall of the lengthwise bamboo fiber foam concrete inner core 2 close to the variable-diameter open-hole bamboo tube 3. This arrangement can fully exert the supporting and reinforcing effect of the variable-diameter open-hole bamboo tube 3. The variable-diameter open-hole bamboo tube 3 is provided with a bamboo tube opening 32 at both ends and a bamboo tube through hole 31 in the middle. The spacing of the bamboo tube through hole 31 is 150 mm, and the diameter of the bamboo tube through hole 31 is 40 mm. The inner diameter of the variable-diameter open-hole bamboo tube 3 at the bamboo tube opening 32 is 76 mm, and the wall thickness is 6 mm. The inner diameter of the variable-diameter open-hole bamboo tube 3 at the bamboo tube through hole 31 is 72 mm, and the wall thickness is 8 mm. The diameters of the variable-diameter open-hole bamboo tube 3 at the bamboo tube opening 32 and the bamboo tube through hole 31 are different, which not only reduces the weight but also improves the material utilization rate and the overall performance of the anti-cracking component.

[0034] The volume fraction of bamboo fiber in the bamboo fiber foam concrete inner core 2 is 4%, the length of the bamboo fiber is 15 mm, the diameter of the bamboo fiber is 160 μm, and the strength of the bamboo fiber is 500 MPa. The porosity of the foam concrete in the bamboo fiber foam concrete inner core 2 is 60%, the splitting tensile strength is 2 MPa, and the compressive strength is 16 MPa. The bamboo fiber foam concrete inner core 2 realizes the balance between high strength and lightweight by reasonably matching the bamboo fiber and the closed-cell foam concrete.

[0035] The cross-shaped hole 5 is a reserved three-dimensional through hole with a round corner 51 at the edge of the hole. The width of the cross-shaped hole 5 is 30 mm, and the thickness is 5 mm. The design of the cross-shaped hole 5 not only facilitates positioning and connection during construction, but also effectively disperses stress and reduces the occurrence of cracks.

[0036] The bamboo strip weaving connection layer 4 includes cross-weaved horizontal bamboo strips 41 and vertical bamboo strips 42. The weaving gap 43 of the horizontal bamboo strips 41 and the vertical bamboo strips 42 is a square with a side length of 6 mm. The width of the horizontal bamboo strips 41 and the vertical bamboo strips 42 is 8 mm, the thickness is 2 mm, the strength is 180 MPa, and the water content is 8%. The horizontal and vertical cross-weaving structure and the reasonable weaving gap 43 of the bamboo strip weaving connection layer 4 not only enhance the overall stability of the anti-cracking component, but also simplify the construction process, making the bamboo strip weaving connection layer 4 have good adaptability and flexibility during installation.

[0037] The high-toughness cement-based sprayed layer 1 has significant strain hardening characteristics and multi-crack cracking phenomenon, can effectively inhibit the expansion of cracks, has good self-repairing and energy absorption capacity, and has excellent impact resistance and wear resistance in the field of engineering reinforcement, and is suitable for building special components, water and electricity dam repair and steel bridge deck paving. In addition, the high-toughness cement-based sprayed layer 1 has good freeze-thaw resistance and carbonation resistance, is sprayed on the outer surface of the bamboo fiber foam concrete inner core 2 and the bamboo strip woven connecting layer 4, and has a thickness of 12mm, which can effectively resist the erosion of the anti-cracking component in the harsh environment.

[0038] Therefore, the environment-friendly foam concrete anti-cracking component based on bamboo material has the advantages that the bamboo fiber, bamboo tube and bamboo strip are all environment-friendly renewable materials, the bamboo fiber foam concrete inner core is relatively light in weight, the anti-cracking component can further reduce the weight of the anti-cracking component by being inserted into the bamboo tube with variable diameter, the bamboo strip woven connecting layer can effectively improve the adhesion between the bamboo fiber foam concrete inner core and the high-toughness cement-based sprayed layer, the high-toughness cement-based sprayed layer can effectively improve the anti-cracking ability and durability of the anti-cracking component, the anti-cracking component has the advantages of being environment-friendly, light in weight, strong in anti-cracking ability and good in durability, and is easy to popularize and apply.

[0039] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model and not to limit them, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solutions of the utility model can still be modified or replaced, and these modifications or replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the utility model.

Claims

1. An environmentally friendly, crack-resistant foamed concrete component based on bamboo, characterized in that, It includes a bamboo fiber foam concrete core, with variable diameter perforated bamboo tubes arranged at intervals inside the bamboo fiber foam concrete core, and a grid-shaped channel on the outer surface of the bamboo fiber foam concrete core. A bamboo strip woven connecting layer is provided on the grid-shaped channel, and the grid-shaped channel matches the bamboo strip woven connecting layer. Both the outer surface of the bamboo fiber foam concrete core and the outer surface of the bamboo strip woven connecting layer are sprayed with a high-toughness cement-based spray layer.

2. The environmentally friendly foamed concrete crack-resistant component based on bamboo according to claim 1, characterized in that, The bamboo fiber volume ratio in the core of bamboo fiber foam concrete is 1.5-4.5%, the length of the bamboo fiber is 15-20mm, its diameter is 160-200μm, and its strength is 500-800MPa.

3. The environmentally friendly foamed concrete crack-resistant component based on bamboo according to claim 2, characterized in that, The core of bamboo fiber foamed concrete has a porosity of 40-60%, a splitting tensile strength of not less than 2MPa, and a compressive strength of not less than 15MPa.

4. The environmentally friendly foamed concrete crack-resistant component based on bamboo according to claim 1, characterized in that, The variable diameter perforated bamboo tubes are arranged in two even rows. The horizontal spacing between the centers of the variable diameter perforated bamboo tubes is 140-160mm, and the vertical spacing is 160-180mm. The distance between the center of the variable diameter perforated bamboo tube and the adjacent bamboo fiber foam concrete inner core sidewall in the longitudinal direction is 180-200mm.

5. The environmentally friendly foamed concrete crack-resistant component based on bamboo according to claim 4, characterized in that, The variable diameter perforated bamboo tube has openings at both ends and a through hole in the middle. The spacing between the through holes is 150mm, and the diameter of the through hole is 30-40mm.

6. The environmentally friendly foamed concrete crack-resistant component based on bamboo according to claim 5, characterized in that, The inner diameter of the bamboo tube with a variable diameter opening at the opening is 76-80mm, and its wall thickness is 6-8mm. The inner diameter of the bamboo tube with a variable diameter opening at the through hole is 72-76mm, and its wall thickness is 8-10mm.

7. The environmentally friendly foamed concrete crack-resistant component based on bamboo according to claim 1, characterized in that, The grid-shaped channel is a three-dimensional through-hole with rounded edges. The width of the grid-shaped channel is 25-30mm and its thickness is 5-7mm.

8. The environmentally friendly foamed concrete crack-resistant component based on bamboo according to claim 1, characterized in that, The bamboo strip woven connecting layer includes cross-woven horizontal bamboo strips and vertical bamboo strips. The woven gaps between the horizontal and vertical bamboo strips are squares with a side length of 6-8mm. The width of both the horizontal and vertical bamboo strips is 8-12mm, their thickness is 1-2mm, their strength is 180-200MPa, and their moisture content is 8-12%.

9. The environmentally friendly foamed concrete crack-resistant component based on bamboo according to claim 1, characterized in that, The thickness of the high-toughness cement-based spray coating is 8-16mm.

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